diff --git a/app/proguard/proguard.cfg b/app/proguard/proguard.cfg
index 6da53f2e30..65e06f3293 100644
--- a/app/proguard/proguard.cfg
+++ b/app/proguard/proguard.cfg
@@ -10,6 +10,7 @@
 -keepclassmembers class ** {
     public void onEvent*(**);
 }
+-keep class org.signal.libsignal.internal.CompletableFuture** { *; }
 
 # Protobuf lite
 -keep class * extends com.google.protobuf.GeneratedMessageLite { *; }